2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol in crystalline form

ABSTRACT

A method of purifying 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacaciferol to obtain 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol in crystalline form. The method includes the steps of boiling a solvent such as acetone under inert atmosphere, dissolving a product containing 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol to be purified in the solvent, cooling the solvent and dissolved product below ambient temperature for a sufficient amount of time to form a precipitate of 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol crystals, and recovering the 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol crystals.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is based on and claims priority from U.S. Provisional Patent Application No. 60/341,138 filed Dec. 13, 2001.

BACKGROUND OF THE INVENTION

The present invention relates to purification of organic compounds, and more particularly to the purification of 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol (referred to herein as 2MBP and/or 2-MbisP) by preparing it in crystalline form.

Purification of organic compounds, especially those designated for pharmaceutical use, is of considerable importance for chemists synthesizing such compounds. Preparation of the compound usually requires many synthetic steps and, therefore, the final product can be contaminated not only with side-products derived from the last synthetic step of the procedure but also with compounds that were formed in previous steps. Even chromatographic purification, which is a very efficient but relatively time-consuming process, does not usually provide compounds which are sufficiently pure to be used as drugs.

Depending on the method used to synthesize 1α-hydroxyvitamin D compounds, different minor undesirable compounds can accompany the final product. Thus, for example, if direct C-1 hydroxylation of 5,6-trans geometric isomer of vitamin D is performed, followed by SeO₂/NMO oxidation and photochemical irradiation [see Andrews et al., J. Org. Chem. 51, 1635 (1986); Calverley et al., Tetrahedron 43, 4609 (1987); Choudry et al., J. Org. Chem. 58, 1496 (1993)], the final 1α-hydroxyvitamin D product can be contaminated with 1β-hydroxy- as well as 5,6-trans isomers. If the method consists of C-1 allylic oxidation of the 4-phenyl-1,2,4-triazoline-3,5-dione adduct of the previtamin D compound, followed by cycloreversion of the modified adduct under basic conditions [Nevinckx et al., Tetrahedron 47, 9419 (1991); Vanmaele et al., Tetrahedron 41, 141 (1985) and 40, 1179 (1991); Vanmaele et al., Tetrahedron Lett. 23, 995 (1982)], one can expect that the desired 1α-hydroxyvitamin can be contaminated with the previtamin 5(10),6,8-triene and 1β-hydroxy isomer. One of the most useful C-1 hydroxylation methods, of very broad scope and numerous applications, is the experimentally simple procedure elaborated by Paaren et al. [see J. Org. Chem. 45, 3253 (1980) and Proc. Natl. Acad. Sci. U.S.A. 75, 2080 (1978)]. This method consists of allylic oxidation of 3,5-cyclovitamin D derivatives, readily obtained from the buffered solvolysis of vitamin D tosylates, with SeO₂/t-BuOOH and subsequent acid-catalyzed cycloreversion to the desired 1α-hydroxy compounds. Taking into account this synthetic path it is reasonable to assume that the final product can be contaminated with 1α-hydroxy epimer, 5,6-trans isomer and the previtamin D form. 1α-hydroxyvitamin D₄ is another undesirable contaminant found in 1α-hydroxyvitamin D compounds synthesized from vitamin D₂ or from ergosterol. 1α-hydroxyvitamin D₄ results from C-1 oxidation of vitamin D₄, which in turn is derived from contamination of the commercial ergosterol material. Typically, the final product may contain up to about 1.5% by weight 1α-hydroxyvitamin D₄. Thus, a purification technique that would eliminate or substantially reduce the amount of 1α-hydroxyvitamin D₄ in the final product to less than about 01.-0.2% would be highly desirable.

The vitamin D conjugated triene system is not only heat- and light-sensitive but it is also prone to oxidation, leading to the complex mixture of very polar compounds. Oxidation usually happens when a vitamin D compound has been stored for a prolonged time. Other types of processes that can lead to a partial decomposition of vitamin D compounds consist of the some water-elimination reactions; their driving force is allylic (1α-) and homoallylic (3β-) position of the hydroxy groups. The presence of such above-mentioned oxidation and elimination products can be easily detected by thin-layer chromatography. Thus, for example, using precoated aluminum silica sheets [with UV indicator; from EM Science (Cherry Hill, N.J.)] and solvent system hexane-ethyl acetate (4:6), the spot of 1α-OH-D₂ (R_(f) 0.27) and its elimination products (R_(f)'s ca. 0.7-0.9) are visible in ultraviolet light. Also, after spraying with sulfuric acid and heating, an additional spot can be visualized (R_(f) 0), derived from oxidation products.

Usually, all 1α-hydroxylation procedures require at least one chromatographic purification. However, even chromatographically purified 1α-hydroxyvitamin D compounds, although showing consistent spectroscopic data, suggesting homogeneity, does not meet the purity criteria required for therapeutic agents that can be orally, parenterally or transdermally administered. Therefore, it was evident that a suitable method of purification of 2MBP is required.

SUMMARY OF THE INVENTION

The present invention relates to a method of purifying 2MBP by means of crystallization to obtain 2MBP in crystalline form. The solvent plays a crucial role in the crystallization process, and is typically an individual liquid substance or a suitable mixture of different liquids. For crystallizing 2MBP, the most appropriate solvent and/or solvent system is characterized by the following factors:

(1) low toxicity;

(2) low boiling point;

(3) significant dependence of solubility properties with regard to temperature (condition necessary for providing satisfactory crystallization yield); and

(4) relatively low cost.

It was found that highly apolar solvents (e.g. hydrocarbons) were not suitable due to the low solubility of 2MBP in them. Quite the reverse situation occurred in highly polar solvent media (e.g. alcohols), in which 2MBP showed too high solubility. Therefore, it was concluded that for the successful crystallization of 2MBP, a solvent of medium polarity is required. Interestingly, hexane, so frequently used for crystallization purposes, was found less suitable for crystallization of 2MBP. However, it was found that an individual solvent, namely acetone, was most useful for the crystallization of 2MBP. In addition, it is believed that solvent systems utilizing ethyl acetate, or isopropanol, or chloroform, or dichloromethane, or diethyl ether would also perform well. These solvents are all very easy to remove by evaporation or other well known methods. In all cases the crystallization process occurred easily and efficiently; and the precipitated crystals were sufficiently large to assure their recovery by filtration.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an illustration of the three dimensional structure of 2MBD as defined by the atomic positional parameters discovered and set forth herein.

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides 2-methylene-19-nor-20(S)-1α-hydroxy-bis-homo-pregnacalciferol (2MBP) in crystalline form, a pharmacologically important compound, characterized by the formula shown below:

The present invention also provides a valuable method of purification of 2MBP. The purification technique involves obtaining the 2MBP product in crystalline form by utilizing a crystallization procedure wherein the 2MBP material to be purified is dissolved using as the solvent a single solvent system comprised of acetone, ethyl acetate, isopropanol, chloroform, dichloromethane, or diethyl ether. The preferred solvent is acetone. Thereafter, the solvent can be removed by evaporation, with or without vacuum, or other means as is well known. The technique can be used to purify a wide range of final products containing 2MBP obtained from any known synthesis thereof, and in varying concentrations, i.e. from microgram amounts to kilogram amounts. As is well known to those skilled in this art, the amount of solvent utilized should be minimized and/or adjusted according to the amount of 2MBP to be purified.

The usefulness and advantages of the present crystallization procedures is shown in the following specific Examples 1 and 2. After crystallization, the precipitated material was observed under a microscope to confirm its crystalline form. Additionally, X-ray diffraction analysis was performed. Yields of crystallizations were high and the obtained crystals showed a relatively sharp melting point of 162-164° C.

The described crystallization process of the synthetic 2MBP product represents a valuable purification method, which can remove not only some side products derived from the synthetic path, but, moreover, concomitant 1α-hydroxyvitamin D₄. Such impurity is the result of the contamination of natural ergosterol with its 22,23-dihydro analog.

Crystallization of 2MBP EXAMPLE 1

Crystallization from Acetone

(a) 2MBP product to be purified may be dissolved in boiling acetone (1.2 mL, Aldrich) under argon atmosphere, left at room temperature (68° F.) for a few hours (1-3 hrs) and then in a refrigerator (35-45° F.) overnight (8-12 hrs). The precipitated crystals should be filtered off, washed with a small volume of a cold (0° C.) acetone and dried.

(b) These crystals of 2MBP may then be recrystallized with acetone (0.5 mL) as described in Example 1(a). The precipitated crystals have a relatively sharp melting point of 162-164° C., and were observed under a microscope to confirm their crystalline form.

EXAMPLE 2

Experimental

A colorless plate-shaped crystal of dimensions 0.40×0.25×0.03 mm was utilized for the structural analysis. Intensity data were collected with a Siemens HISTAR area detector mounted on a platform goniometer using Cu Kα radiation (λ=1.54178 Å) focused with Goebel optics. The crystal was mounted on a thin nylon fiber with vacuum grease and data were collected at ambient temperature, 293° K. The intensity data were measured as a series of ω oscillation frames each of 0.25°; these were comprised of 5 scans (500 images each, 40 sec./image) at detector 2θ of −85° and 2 scans (500 images each, 20 sec./image) at detector 2θ of −40°. The detector was operated in 512×512 mode and was positioned 6.0 cm from the sample. Coverage of unique data was 95.4% complete to 58.88 degrees in θ. The first 50 frames were repeated at the end of data collection and showed essentially no decay of the crystal diffraction during the data collection. A total of 6917 data was measured in the range 4.38<θ<58.88°. The data were merged and scaled to form a set of 2697 independent data with R(int)=0.0562 using SAINT (Bruker-AXS, Inc.).

The orthorhombic space group P2(1)2(1)2(1) was determined by systematic absences and statistical tests and verified by subsequent refinement. The structure was solved by direct methods and refined by full-matrix least-squares methods on F² using SHELXL-97 (G. M. Sheldrick, 1994; SHELXTL Version 5 Reference Manual, Bruker-AXS, Inc.). Hydrogen atom positions were intially located in Fourier difference maps, but refined by a riding model with idealized geometries. Non-hydrogen atoms were refined with anisotropic displacement parameters. A total of 229 parameters were refined against 0 restraints and 2697 data to give wR(F²)=0.1369 and S=1.088 for weights of w=1/[s² (F²)+(0.0824 P)²], where P=[F₀ ²+2F_(c) ²]/3. The final R(F) was 0.0544 for the 2697 observed, [F>2s(F)], data. The final difference map had maxima and minima of 0.126 and −0.153 e/Å³, respectively.

The three dimensional structure of 2MBP as defined by the following physical data and atomic positional parameters described and calculated herein is illustrated in FIG. 1.

TABLE I Crystal data and structure refinement for 2-MbisP. Empirical formula C23 H36 O2 Formula weight 344.52 Temperature 293(2) K Wavelength 1.54178 Å Crystal system, space group Orthorhombic, P2(1)2(1)2(1) Unit cell dimensions a = 6.6320(13) Å α = 90° b = 15.514(3) Å β = 90° c = 20.194(4) Å γ = 90° Volume 2077.7(7) Å³ Z, Calculated density 4, 1.101 Mg/m³ Absorption coefficient 0.520 mm⁻¹ F(000) 760 Crystal size 0.40 × 0.25 × 0.03 mm Theta range for data collection 4.38 to 58.88° Limiting indices −7 <= h <= 5, −12 <= k <= 17, −22 <= 1 <= 21 Reflections collected/unique 6917/2697 [R_(int) = 0.0562] Completeness to theta = 25.00 95.4% Refinement method Full-matrix least-squares on F² Data/restraints/parameters 2697/0/229 Goodness-of-fit on F² 1.088 Final R indices [I > 2 sigma(I)] R1 = 0.0544, wR2 = 0.1369 R indices (all data) R1 = 0.0622, wR2 = 0.1453 Largest diff. peak and hole 0.126 and −0.153 e/A⁻³

TABLE 2 Atomic coordinates (×10⁴) and equivalent isotropic displacement parameters (Å² × 10³) for 2-MbisP. U(eq) is defined as one third of the trace of the orthogonalized Uij tensor. x y z U(eq) O(1) 1842(3) 3525(1) 5011(1) 62(1) O(3) 7954(4) 3113(1) 4476(2) 78(1) C(1) 3883(5) 3729(2) 4852(2) 50(1) C(2) 4569(5) 3359(2) 4201(2) 58(1) C(3) 6698(5) 3569(2) 4030(2) 61(1) C(4) 7074(6) 4537(2) 4057(2) 59(1) C(5) 6301(5) 4937(2) 4686(2) 48(1) C(6) 7497(5) 5433(2) 5059(2) 52(1) C(7) 7012(5) 5872(2) 5673(2) 53(1) C(8) 8248(5) 6371(2) 6020(2) 50(1) C(9) 10390(5) 6589(2) 5828(2) 65(1) C(10) 4161(5) 4704(2) 4851(2) 51(1) C(11) 10739(6) 7562(2) 5809(2) 70(1) C(12) 10108(6) 8006(2) 6452(2) 61(1) C(13) 7933(5) 7806(2) 6640(1) 47(1) C(14) 7696(5) 6814(2) 6661(2) 50(1) C(15) 5663(6) 6668(2) 6982(2) 62(1) C(16) 5453(5) 7416(2) 7474(2) 59(1) C(17) 7251(5) 8038(2) 7353(2) 51(1) C(18) 6466(6) 8205(2) 6135(2) 64(1) C(19) 3405(7) 2898(3) 3811(2) 97(2) C(20) 6703(6) 8967(2) 7542(2) 65(1) C(21) 6012(8) 9017(3) 8269(2) 92(2) C(22) 8368(7) 9636(2) 7418(2) 89(1) C(23) 10284(9) 9512(3) 7809(3) 116(2)

TABLE 3 Bond lengths [Å] and angles [°] for 2-MbisP. O(1)—C(1) 1.426(4) O(3)—C(3) 1.416(4) C(1)—C(2) 1.505(5) C(1)—C(10) 1.524(4) C(2)—C(19) 1.314(5) C(2)—C(3) 1.490(5) C(3)—C(4) 1.522(4) C(4)—C(5) 1.504(5) C(5)—C(6) 1.335(4) C(5)—C(10) 1.502(5) C(6)—C(7) 1.452(4) C(7)—C(8) 1.327(4) C(8)—C(9) 1.511(5) C(8)—C(14) 1.511(4) C(9)—C(11) 1.527(5) C(11)—C(12) 1.530(5) C(12)—C(13) 1.523(5) C(13)—C(18) 1.539(5) C(13)—C(14) 1.548(4) C(13)—C(17) 1.553(4) C(14)—C(15) 1.513(5) C(15)—C(16) 1.534(5) C(16)—C(17) 1.553(5) C(17)—C(20) 1.535(5) C(20)—C(22) 1.536(6) C(20)—C(21) 1.540(5) C(22)—C(23) 1.508(7) O(1)—C(1)—C(2) 113.5(2) O(1)—C(1)—C(10) 109.6(2) C(2)—C(1)—C(10) 109.9(3) C(19)—C(2)—C(3) 122.5(3) C(19)—C(2)—C(1) 123.6(3) C(3)—C(2)—C(1) 113.9(3) O(3)—C(3)—C(2) 107.5(3) O(3)—C(3)—C(4) 111.9(3) C(2)—C(3)—C(4) 111.3(3) C(5)—C(4)—C(3) 112.5(3) C(6)—C(5)—C(10) 125.1(3) C(6)—C(5)—C(4) 120.7(3) C(10)—C(5)—C(4) 114.2(3) C(5)—C(6)—C(7) 128.3(3) C(8)—C(7)—C(6) 126.0(3) C(7)—C(8)—C(9) 125.1(3) C(7)—C(8)—C(14) 124.6(3) C(9)—C(8)—C(14) 110.3(3) C(8)—C(9)—C(11) 111.7(3) C(5)—C(10)—C(1) 110.8(2) C(9)—C(11)—C(12) 112.5(3) C(13)—C(12)—C(11) 112.2(3) C(12)—C(13)—C(18) 110.6(3) C(12)—C(13)—C(14) 107.8(3) C(18)—C(13)—C(14) 110.8(3) C(12)—C(13)—C(17) 117.3(3) C(18)—C(13)—C(17) 109.7(3) C(14)—C(13)—C(17) 100.1(2) C(15)—C(14)—C(8) 121.0(3) C(15)—C(14)—C(13) 104.6(3) C(8)—C(14)—C(13) 113.8(2) C(14)—C(15)—C(16) 104.2(3) C(15)—C(16)—C(17) 107.4(3) C(20)—C(17)—C(16) 111.3(3) C(20)—C(17)—C(13) 121.2(3) C(16)—C(17)—C(13) 103.0(2) C(22)—C(20)—C(17) 115.0(3) C(22)—C(20)—C(21) 109.6(3) C(17)—C(20)—C(21) 110.8(3) C(23)—C(22)—C(20) 115.7(4)

TABLE 4 Anisotropic displacement parameters (Å² × 10³) for 2-MbisP. The anisotropic displacement factor exponent takes the form: −2π²[h² α*² U11 + ... + 2 h k α* b* U12] U11 U22 U33 U23 U13 U12 O(1) 36(1) 59(1) 92(2) −7(1) −3(1) −5(1) O(3) 42(1) 48(1) 145(2) 3(1) −17(2) 2(1) C(1) 34(2) 45(2) 70(2) −5(2) −11(2) −1(1) C(2) 39(2) 51(2) 83(2) −21(2) −14(2) 6(1) C(3) 55(2) 52(2) 75(2) −19(2) −7(2) 8(2) C(4) 60(2) 56(2) 61(2) −2(2) 2(2) 0(2) C(5) 52(2) 34(1) 58(2) 3(1) −5(2) 1(1) C(6) 51(2) 45(2) 61(2) 2(1) 5(2) −9(2) C(7) 56(2) 42(2) 62(2) 2(1) 6(2) −8(2) C(8) 47(2) 44(2) 58(2) 3(1) −1(2) −10(2) C(9) 48(2) 75(2) 73(2) −15(2) 3(2) −12(2) C(10) 44(2) 41(2) 66(2) −11(1) −6(2) 4(1) C(11) 59(2) 78(2) 72(2) −12(2) 11(2) −32(2) C(12) 59(2) 61(2) 63(2) −5(2) 1(2) −22(2) C(13) 43(2) 51(2) 47(2) 5(1) −6(2) −7(2) C(14) 45(2) 52(2) 53(2) 4(1) −4(2) −8(2) C(15) 53(2) 64(2) 69(2) 1(2) 9(2) −19(2) C(16) 48(2) 71(2) 58(2) 3(2) 4(2) 0(2) C(17) 49(2) 53(2) 50(2) 1(1) −7(2) −1(2) C(18) 71(3) 66(2) 57(2) 10(2) −11(2) −5(2) C(19) 53(3) 122(4) 117(3) −68(3) −9(3) −8(2) C(20) 73(3) 59(2) 64(2) −5(2) −2(2) 8(2) C(21) 117(4) 82(3) 76(2) −16(2) 20(3) 9(3) C(22) 104(4) 63(2) 99(3) −12(2) 18(3) −6(2) C(23) 107(4) 101(4) 140(5) −39(3) −4(4) −25(3)

TABLE 5 Hydrogen coordinates (×10⁴) and isotropic displacement parameters (Å² × 10³) for 2-MbisP. x y z U(eq) H(1O) 2030 2820 5188 75 H(3O) 9248 3381 4573 94 H(1) 4744 3489 5201 60 H(3) 6972 3366 3580 73 H(4A) 8510 4644 4021 71 H(4B) 6418 4808 3682 71 H(6) 8807 5506 4904 63 H(7) 5716 5796 5840 64 H(9A) 10678 6347 5395 78 H(9B) 11311 6330 6144 78 H(10A) 3261 4960 4528 61 H(10B) 3817 4933 5284 61 H(11A) 9979 7806 5444 84 H(11B) 12157 7673 5728 84 H(12A) 10992 7820 6807 74 H(12B) 10264 8624 6403 74 H(14) 8690 6614 6986 60 H(15A) 5627 6117 7210 74 H(15B) 4592 6682 6655 74 H(16A) 5482 7201 7925 71 H(16B) 4186 7714 7405 71 H(17) 8337 7857 7652 61 H(18A) 6780 8804 6077 97 H(18B) 5109 8148 6295 97 H(18C) 6593 7911 5719 97 H(19A) 3904 2689 3412 117 H(19B) 2083 2780 3935 117 H(20) 5547 9133 7268 78 H(21A) 7037 8779 8551 138 H(21B) 4785 8697 8323 138 H(21C) 5783 9609 8388 138 H(22A) 8703 9627 6950 106 H(22B) 7832 10203 7518 106 H(23A) 9974 9502 8273 174 H(23B) 11194 9978 7717 174 H(23C) 10902 8976 7684 174

TABLE 6 Torsion angles [°] for 2-MbisP. O(1)—C(1)—C(2)—C(19) 0.5(5) C(10)—C(1)—C(2)—C(19) −122.6(4) O(1)—C(1)—C(2)—C(3) 179.9(3) C(10)—C(1)—C(2)—C(3) 56.8(3) C(19)—C(2)—C(3)—O(3) −111.3(4) C(1)—C(2)—C(3)—O(3) 69.2(3) C(19)—C(2)—C(3)—C(4) 125.8(4) C(1)—C(2)—C(3)—C(4) −53.7(4) O(3)—C(3)—C(4)—C(5) −71.4(4) C(2)—C(3)—C(4)—C(5) 48.9(4) C(3)—C(4)—C(5)—C(6) 128.0(3) C(3)—C(4)—C(5)—C(10) −50.1(4) C(10)—C(5)—C(6)—C(7) −2.4(5) C(4)—C(5)—C(6)—C(7) 179.7(3) C(5)—C(6)—C(7)—C(8) −178.8(3) C(6)—C(7)—C(8)—C(9) 1.4(5) C(6)—C(7)—C(8)—C(14) −179.6(3) C(7)—C(8)—C(9)—C(11) 125.7(3) C(14)—C(8)—C(9)—C(11) −53.4(4) C(6)—C(5)—C(10)—C(1) −125.0(3) C(4)—C(5)—C(10)—C(1) 53.1(3) O(1)—C(1)—C(10)—C(5) 179.9(2) C(2)—C(1)—C(10)—C(5) −54.7(3) C(8)—C(9)—C(11)—C(12) 53.0(4) C(9)—C(11)—C(12)—C(13) −54.6(4) C(11)—C(12)—C(13)—C(18) −66.8(4) C(11)—C(12)—C(13)—C(14) 54.5(4) C(11)—C(12)—C(13)—C(17) 166.4(3) C(7)—C(8)—C(14)—C(15) 3.9(5) C(9)—C(8)—C(14)—C(15) −177.0(3) C(7)—C(8)—C(14)—C(13) −122.0(3) C(9)—C(8)—C(14)—C(13) 57.2(4) C(12)—C(13)—C(14)—C(15) 168.8(3) C(18)—C(13)—C(14)—C(15) −70.1(3) C(17)—C(13)—C(14)—C(15) 45.6(3) C(12)—C(13)—C(14)—C(8) −57.1(3) C(18)—C(13)—C(14)—C(8) 64.1(4) C(17)—C(13)—C(14)—C(8) 179.7(3) C(8)—C(14)—C(15)—C(16) −163.1(3) C(13)—C(14)—C(15)—C(16) −33.1(3) C(14)—C(15)—C(16)—C(17) 7.4(4) C(15)—C(16)—C(17)—C(20) 151.9(3) C(15)—C(16)—C(17)—C(13) 20.6(3) C(12)—C(13)—C(17)—C(20) 79.2(4) C(18)—C(13)—C(17)—C(20) −48.2(4) C(14)—C(13)—C(17)—C(20) −164.7(3) C(12)—C(13)—C(17)—C(16) −155.7(3) C(18)—C(13)—C(17)—C(16) 76.9(3) C(14)—C(13)—C(17)—C(16) −39.5(3) C(16)—C(17)—C(20)—C(22) −178.0(3) C(13)—C(17)—C(20)—C(22) −56.8(5) C(16)—C(17)—C(20)—C(21) 56.9(4) C(13)—C(17)—C(20)—C(21) 178.1(3) C(17)—C(20)—C(22)—C(23) −62.9(5) C(21)—C(20)—C(22)—C(23) 62.8(5)

TABLE 7 Observed and calculated structure factors for 2-Mbis-P h k l 10Fo 10Fc 10s h k l 10Fo 10Fc 10s h k l 10Fo 10Fc 10s h k l 10Fo 10Fc 10s h k l 10Fo 10Fc 10s 4 0 0 51 50 3 1 15 0 43 53 3 0 6 1 298 328 8 −4 14 1 38 38 5 1 5 2 153 145 7 5 0 0 49 54 4 2 15 0 82 87 2 1 6 1 326 324 6 −3 14 1 54 53 3 2 5 2 175 176 2 1 1 0 108 125 1 3 15 0 53 49 3 2 6 1 62 70 2 −2 14 1 95 101 3 3 5 2 156 167 5 2 1 0 833 823 10 0 16 0 28 24 8 3 6 1 76 73 2 −1 14 1 78 78 2 4 5 2 194 188 2 4 1 0 448 435 4 1 16 0 25 18 5 4 6 1 68 62 1 0 14 1 73 68 1 5 5 2 99 96 2 5 1 0 62 62 1 2 16 0 17 12 8 5 6 1 125 129 2 1 14 1 78 79 1 6 5 2 84 79 3 6 1 0 65 72 2 1 17 0 54 37 10 6 6 1 89 91 2 2 14 1 97 101 2 7 5 2 70 47 4 0 2 0 650 820 8 1 0 1 304 297 5 −5 7 1 152 158 5 3 14 1 44 53 5 −6 6 2 65 66 3 1 2 0 510 519 6 2 0 1 85 79 1 −4 7 1 168 165 1 4 14 1 44 34 5 −5 6 2 60 66 2 2 2 0 88 88 2 4 0 1 115 107 1 −3 7 1 138 136 2 −3 15 1 33 5 5 −4 6 2 74 77 1 4 2 0 217 213 2 5 0 1 111 115 2 −2 7 1 101 94 2 −2 15 1 46 46 6 −3 6 2 130 128 3 5 2 0 120 117 1 6 0 1 36 28 4 −1 7 1 219 219 3 −1 15 1 25 30 6 −2 6 2 150 159 2 6 2 0 36 42 5 −6 1 1 56 55 3 0 7 1 223 236 3 0 15 1 38 30 2 −1 6 2 233 248 3 7 2 0 37 49 7 −5 1 1 107 120 2 1 7 1 213 220 3 1 15 1 38 30 5 0 6 2 529 545 4 1 3 0 352 375 3 −4 1 1 162 152 4 2 7 1 91 93 2 2 15 1 34 46 6 1 6 2 238 248 11 2 3 0 39 35 3 −2 1 1 338 350 2 3 7 1 136 137 1 3 15 1 27 4 5 2 6 2 152 158 2 3 3 0 58 55 2 −1 1 1 1141 1205 14 4 7 1 174 165 1 −2 16 1 24 27 7 3 6 2 131 128 1 4 3 0 84 80 1 1 1 1 1134 1206 11 5 7 1 160 158 2 −1 16 1 27 13 6 4 6 2 77 77 2 5 3 0 43 42 8 4 1 1 163 152 1 6 7 1 33 17 24 0 16 1 18 4 17 5 6 2 61 66 2 6 3 0 54 51 5 5 1 1 109 120 2 −6 8 1 61 46 10 1 16 1 33 13 8 6 6 2 69 66 3 7 3 0 34 7 7 6 1 1 56 55 11 −5 8 1 65 60 11 2 16 1 20 28 6 −6 7 2 39 49 13 0 4 0 114 118 2 7 1 1 19 16 18 −4 8 1 52 51 2 0 17 1 24 32 5 −5 7 2 96 98 3 1 4 0 17 3 3 −7 2 1 38 15 7 −3 8 1 150 145 1 1 17 1 17 3 17 −4 7 2 65 63 2 2 4 0 88 82 1 −6 2 1 41 44 4 −2 8 1 86 88 1 0 0 2 393 405 5 −3 7 2 99 90 2 4 4 0 87 87 1 −5 2 1 28 16 5 −1 8 1 68 69 5 1 0 2 332 336 8 −2 7 2 141 157 2 5 4 0 19 15 18 −4 2 1 256 252 5 0 8 1 378 391 3 2 0 2 412 409 8 −1 7 2 442 439 5 6 4 0 99 104 5 −3 2 1 108 98 2 1 8 1 69 68 2 4 0 2 137 137 3 0 7 2 252 268 2 7 4 0 66 56 4 −2 2 1 98 100 2 2 8 1 89 87 2 −6 1 3 34 44 5 1 7 2 447 419 14 1 5 0 17 4 7 −1 2 1 465 481 4 3 8 1 152 145 1 −5 1 2 114 119 4 2 7 2 146 157 2 2 5 0 72 64 1 0 2 1 15 2 3 4 8 1 54 51 6 −4 1 2 52 49 2 3 7 2 99 89 1 3 5 0 108 106 6 1 2 1 478 482 4 5 8 1 67 59 4 −2 1 2 174 178 1 4 7 2 69 63 2 4 5 0 86 82 1 2 2 1 93 99 2 6 8 1 46 48 4 −1 1 2 599 599 5 5 7 2 102 97 2 5 5 0 34 29 3 4 2 1 257 252 2 −6 9 1 37 28 12 0 1 2 166 164 2 6 7 2 51 48 4 6 5 0 29 22 6 5 2 1 17 16 8 −5 9 1 84 71 3 2 1 2 278 178 2 −6 8 2 20 16 13 7 5 0 57 41 6 6 2 1 41 44 6 −4 9 1 105 103 1 4 1 2 50 49 2 −5 8 2 53 52 4 0 6 0 645 708 8 7 2 1 17 14 16 −3 9 1 156 151 1 5 1 2 119 118 2 −4 8 2 118 118 1 1 6 0 360 437 50 −7 3 1 41 49 6 −2 9 1 54 46 1 6 1 2 47 44 3 −3 8 2 92 90 4 2 6 0 101 86 21 −6 3 1 52 50 4 −1 9 1 194 201 9 7 1 2 59 55 5 −2 8 2 40 37 2 3 6 0 36 39 3 −5 3 1 171 175 1 0 9 1 227 223 2 −7 2 2 39 34 6 −1 8 2 325 343 4 4 6 0 19 17 4 −4 3 1 239 231 3 1 9 1 190 201 7 −6 2 2 106 111 2 0 8 2 165 266 2 5 6 0 80 76 5 −3 3 1 457 454 6 2 9 1 50 46 3 −5 2 2 211 211 3 1 8 2 312 455 4 6 6 0 48 44 4 −2 3 1 306 308 4 3 9 1 157 151 1 −4 2 2 74 77 1 2 8 2 38 37 1 1 7 0 31 28 3 −1 3 1 375 403 4 4 9 1 114 103 1 −3 2 2 385 373 5 3 8 2 92 91 1 2 7 0 110 128 25 0 3 1 358 411 19 5 9 1 74 71 5 −2 2 2 96 91 1 4 8 2 118 118 3 3 7 0 72 70 1 1 3 1 394 402 3 6 9 1 36 28 6 −1 2 2 614 632 19 5 8 2 54 52 4 4 7 0 79 78 2 2 3 1 304 307 4 −5 10 1 54 57 4 0 2 2 371 373 7 6 8 2 32 16 15 5 7 0 171 167 2 3 3 1 472 455 6 −4 10 1 107 110 3 1 2 2 623 632 8 −6 9 2 76 71 5 6 7 0 49 48 4 4 3 1 240 231 2 −3 10 1 168 166 1 2 2 2 105 92 2 −5 9 2 42 36 6 0 8 0 134 137 2 5 3 1 169 176 3 −2 10 1 79 79 3 4 2 2 80 78 1 −4 9 2 170 164 2 1 8 0 226 226 8 6 3 1 44 50 5 −1 10 1 139 149 2 5 2 2 211 211 6 −3 9 2 83 82 1 2 8 0 211 196 3 7 3 1 54 49 5 0 10 1 127 138 1 6 2 2 116 111 3 −2 9 2 44 39 2 3 8 0 66 64 1 −7 4 1 46 41 5 1 10 1 145 148 1 7 2 2 34 35 7 −1 9 2 77 79 1 4 8 0 315 302 2 −6 4 1 81 84 2 2 10 1 74 79 1 −7 3 2 69 71 4 0 9 2 64 93 3 5 8 0 67 53 3 −5 4 1 36 26 20 3 10 1 168 165 1 −6 3 2 75 81 4 1 9 2 80 79 2 6 8 0 38 28 6 −4 4 1 171 165 1 4 10 1 107 110 2 −5 3 2 112 104 1 2 9 2 40 38 1 1 9 0 247 260 7 −3 4 1 189 193 3 5 10 1 62 57 4 −4 3 2 147 144 3 3 9 2 85 82 1 2 9 0 243 244 2 −2 4 1 199 199 3 −5 11 1 22 6 13 −3 3 2 190 177 3 4 9 2 172 164 4 3 9 0 193 186 2 −1 4 1 346 367 4 −4 11 1 77 79 2 −2 3 2 105 107 2 5 9 2 25 36 9 4 9 0 405 398 3 0 4 1 450 520 13 −3 11 1 31 50 1 −1 3 2 395 396 14 6 9 2 77 71 8 5 9 0 8 2 8 1 4 1 356 368 13 −2 11 1 70 71 1 0 3 2 252 272 12 −5 10 2 29 11 11 6 9 0 91 75 7 2 4 1 195 200 2 −1 11 1 92 93 2 1 3 2 391 396 5 −4 10 2 100 99 4 0 10 0 119 124 2 3 4 1 182 194 3 0 11 1 98 100 2 2 3 2 108 107 2 −3 10 2 176 168 3 1 10 0 54 49 1 4 4 1 176 166 3 1 11 1 94 93 2 4 3 2 146 144 1 −2 10 2 145 135 2 2 10 0 127 124 1 5 4 1 37 26 4 2 11 1 58 71 1 5 3 2 108 103 4 −1 10 2 167 159 3 3 10 0 116 115 1 6 4 1 83 84 3 3 11 1 52 50 2 6 3 2 89 81 3 0 10 2 187 189 3 4 10 0 26 0 5 7 4 1 37 41 6 4 11 1 79 79 2 7 3 2 75 70 3 1 10 2 168 158 2 5 10 0 63 63 4 −7 5 1 58 45 5 5 11 1 6 6 5 −6 4 2 95 101 2 2 10 2 142 135 1 1 11 0 77 75 2 −6 5 1 26 18 16 −5 12 1 49 46 6 −5 4 2 75 79 4 3 10 2 177 168 1 2 11 0 46 45 3 −5 5 1 79 76 2 −4 12 1 40 35 4 −4 4 2 172 175 3 4 10 2 99 100 3 3 11 0 15 15 5 −4 5 1 44 46 1 −3 12 1 52 55 2 −3 4 2 241 230 3 5 10 2 33 11 14 4 11 0 142 441 2 −3 5 1 136 137 2 −2 12 1 162 161 1 −2 4 2 431 439 5 −5 11 2 69 66 3 5 11 0 46 35 14 −2 5 1 337 336 4 −1 12 1 159 150 4 −1 4 2 58 62 2 −4 11 2 49 45 3 0 12 0 58 55 3 −1 5 1 171 174 2 0 12 1 111 117 2 0 4 2 242 268 20 −3 11 2 87 87 2 1 12 0 67 69 1 0 5 1 274 294 2 1 12 1 163 151 3 1 4 2 69 63 1 −2 11 2 106 103 4 2 12 0 145 145 1 1 5 1 174 174 2 2 12 1 158 161 1 2 4 2 438 438 7 −1 11 2 108 119 2 3 12 0 43 40 4 2 5 1 343 336 4 3 12 1 56 55 2 3 4 2 247 229 3 0 11 2 96 88 2 4 12 0 32 24 4 3 5 1 126 137 1 4 12 1 32 35 10 4 4 2 177 175 2 1 11 2 112 110 1 5 12 0 45 36 4 4 5 1 45 46 2 5 12 1 48 46 13 5 4 2 80 79 2 2 11 2 105 104 1 1 13 0 26 9 7 5 5 1 92 76 3 −4 13 1 41 23 9 6 4 2 106 101 3 3 11 2 87 87 2 2 13 0 161 164 1 6 5 1 24 18 14 −3 13 1 67 71 2 7 4 2 50 40 5 4 11 2 41 45 4 3 13 0 137 141 1 7 5 1 88 45 4 −2 13 1 45 47 2 −6 5 2 85 79 4 5 11 2 70 66 3 4 13 0 43 42 9 −6 6 1 87 91 4 −1 13 1 49 38 2 −5 5 2 94 96 7 −5 12 2 59 63 20 0 14 0 79 84 2 −5 6 1 125 128 2 0 13 1 23 25 3 −4 5 2 188 188 1 −4 12 2 65 59 3 1 14 0 40 32 2 −4 6 1 61 61 1 1 13 1 54 38 5 −3 5 2 162 167 3 −3 12 2 46 48 2 2 14 0 32 26 4 −3 6 1 77 73 1 2 13 1 50 47 4 −2 5 2 181 176 3 −2 12 2 39 46 6 3 14 0 87 89 2 −2 6 1 73 71 2 3 13 1 70 71 2 −1 5 2 151 146 2 −1 12 2 43 27 9 4 14 0 49 43 4 −1 6 1 327 325 4 4 13 1 41 23 7 0 5 2 901 990 15 0 12 2 21 13 3 1 12 2 38 27 9 1 4 3 305 297 3 0 11 3 72 67 1 1 3 4 316 326 2 −2 10 4 70 68 2 2 12 2 41 46 2 2 4 3 115 120 2 1 11 3 65 63 2 4 3 4 11 8 10 −1 10 4 81 80 1 3 12 2 43 48 2 4 4 3 86 85 2 2 11 3 141 137 2 5 3 4 38 44 3 0 10 4 49 49 1 4 12 2 66 59 3 5 4 3 139 136 3 3 11 3 159 153 1 6 3 4 81 78 3 1 10 4 81 79 3 5 12 2 33 63 9 6 4 3 72 68 4 4 11 3 130 130 2 7 3 4 42 41 5 2 10 4 70 67 2 4 13 2 34 34 8 7 4 3 48 42 5 5 11 3 96 92 2 −6 4 4 84 94 3 3 10 4 105 104 2 3 13 2 87 90 2 −6 5 3 52 51 11 −5 12 3 38 48 8 −5 4 4 28 32 4 4 10 4 77 68 2 2 13 2 36 20 5 −5 5 3 172 171 2 −4 12 3 29 25 5 −4 4 4 142 142 1 5 10 4 58 60 3 1 13 2 116 120 2 −4 5 3 76 72 2 −3 12 3 135 135 4 −3 4 4 235 222 3 −5 11 4 119 116 2 0 13 2 66 62 2 −3 5 3 21 12 7 −2 12 3 80 84 2 −2 4 4 186 180 2 −4 11 4 24 11 7 1 13 2 117 120 3 −2 5 3 223 216 2 −1 12 3 181 175 3 −1 4 4 400 390 8 −3 11 4 113 111 2 2 13 2 30 20 7 −1 5 3 186 196 2 0 12 3 45 49 2 0 4 4 327 325 3 −2 11 4 86 83 2 3 13 2 89 90 2 0 5 3 733 738 46 1 12 3 176 174 3 1 4 4 392 390 9 −1 11 4 154 160 2 4 13 2 38 34 5 1 5 3 197 196 2 2 12 3 81 84 3 2 4 4 186 180 6 0 11 4 109 111 1 4 14 2 60 57 8 2 5 3 225 217 3 3 12 3 133 136 1 3 4 4 208 222 3 1 11 4 152 151 2 3 14 2 41 43 3 3 5 3 15 12 10 4 12 3 15 24 14 4 4 4 153 142 2 2 11 4 83 83 1 2 14 2 56 61 2 4 5 3 79 73 2 5 12 3 50 48 3 5 4 4 31 32 4 3 11 4 117 111 1 1 14 2 34 25 3 5 5 3 176 171 4 −4 13 3 25 20 13 6 4 4 90 94 3 4 11 4 32 12 6 0 14 2 92 92 1 6 5 3 54 51 5 −3 13 3 64 62 2 7 4 4 25 6 10 5 11 4 112 115 2 1 14 2 22 25 6 −6 6 3 52 51 7 −2 13 3 38 36 2 −6 5 4 84 99 4 −5 12 4 59 47 8 2 14 2 61 61 4 −5 6 3 93 93 3 −1 13 3 49 48 2 −5 5 4 133 138 5 −4 12 4 19 4 10 3 14 2 41 42 4 −4 6 3 120 114 2 0 13 3 34 24 5 −4 5 4 57 59 2 −3 12 4 116 121 2 4 14 2 53 57 5 −3 6 3 62 60 2 1 13 3 44 48 2 −3 5 4 147 150 2 −2 12 4 44 32 5 3 15 2 36 36 4 −2 6 3 238 243 3 2 13 3 48 36 12 −2 5 4 177 182 3 −1 12 4 125 117 3 2 15 2 47 44 4 −1 6 3 88 86 2 3 13 3 63 62 3 −1 5 4 258 237 2 0 12 4 54 62 2 1 15 2 21 10 7 0 6 3 136 146 1 4 13 3 38 20 8 0 5 4 339 335 20 1 12 4 119 117 1 0 15 2 33 36 3 1 6 3 92 84 1 −4 14 3 37 38 8 1 5 4 247 237 2 2 12 4 41 32 3 1 15 2 25 10 5 2 6 3 233 242 3 −3 14 3 96 96 2 2 5 4 165 181 1 3 12 4 120 121 2 2 15 2 40 44 4 3 6 3 61 61 2 −2 14 3 94 106 2 3 5 4 132 151 2 4 12 4 31 4 31 3 15 2 34 37 4 4 6 3 125 114 2 −1 14 3 31 18 4 4 5 4 60 59 2 5 12 4 46 47 5 2 16 2 24 16 5 5 6 3 97 93 2 0 14 3 27 29 4 5 5 4 132 138 2 −4 13 4 59 56 3 1 16 2 27 29 6 6 6 3 58 51 4 1 14 3 24 19 5 6 5 4 94 99 3 −3 13 4 77 80 1 0 16 2 37 17 4 −6 7 3 32 23 9 2 14 3 101 106 3 −6 6 4 66 73 11 −2 13 4 98 98 1 1 16 2 29 29 3 −5 7 3 33 57 2 3 14 3 99 96 5 −5 6 4 59 58 3 −1 13 4 37 42 6 2 16 2 23 16 6 −4 7 3 232 230 2 4 14 3 37 38 4 −4 6 4 77 79 2 0 13 4 58 64 3 0 17 2 19 14 8 −3 7 3 59 56 2 −3 15 3 35 35 9 −3 6 4 67 64 1 1 13 4 40 42 3 1 17 2 37 28 6 −2 7 3 171 151 3 −2 15 3 36 33 3 −2 6 4 173 169 3 2 13 4 98 99 2 1 0 3 986 1006 11 −1 7 3 228 222 3 −1 15 3 32 21 6 −1 6 4 330 348 4 3 13 4 76 80 2 2 0 3 115 121 2 0 7 3 379 403 3 0 15 3 39 34 3 0 6 4 55 58 4 4 13 4 50 57 7 4 0 3 324 311 5 1 7 3 230 222 6 1 15 3 36 21 7 1 6 4 350 349 7 −4 14 4 62 58 6 6 0 3 56 51 14 2 7 3 167 180 3 2 15 3 31 33 6 2 6 4 157 169 2 −3 14 4 67 64 2 6 1 3 73 67 3 3 7 3 57 56 1 3 15 3 40 35 4 3 6 4 48 64 1 −2 14 4 22 14 5 5 1 3 253 250 9 4 7 3 231 230 7 −2 16 3 34 35 2 4 6 4 82 79 6 −1 14 4 38 39 6 4 1 3 176 170 3 5 7 3 59 57 3 −1 16 3 28 7 5 5 6 4 58 58 2 0 14 4 77 83 2 3 1 3 392 392 7 6 7 3 38 23 16 0 16 3 52 35 2 6 6 4 77 73 4 1 14 4 38 39 4 2 1 3 207 207 2 −6 8 3 32 28 10 1 16 3 29 7 6 −6 7 4 55 36 6 2 14 4 20 15 9 1 1 3 101 95 2 −5 8 3 31 15 4 2 16 3 42 36 6 −5 7 4 101 105 3 3 14 4 64 64 3 0 1 3 1115 1114 19 −4 8 3 73 78 2 0 17 3 68 76 3 −4 7 4 57 57 2 4 14 4 56 59 4 1 1 3 97 96 2 −3 8 3 293 191 2 0 0 4 372 431 7 −3 7 4 35 36 1 −3 15 4 42 42 2 2 1 3 205 206 2 −2 8 3 189 190 4 1 0 4 549 576 4 −2 7 4 147 139 3 −2 15 4 56 66 5 4 1 3 176 169 2 −1 8 3 310 324 4 2 0 4 64 65 1 −1 7 4 302 287 4 −1 15 4 49 55 8 5 1 3 252 249 5 0 8 3 234 243 11 4 0 4 38 42 23 0 7 4 175 175 14 0 15 4 44 36 3 6 1 3 69 66 2 1 8 3 308 325 7 5 0 4 99 100 3 1 7 4 299 287 4 1 15 4 61 55 3 7 1 3 42 18 6 2 8 3 185 191 3 6 0 4 116 121 7 2 7 4 142 175 2 2 15 4 54 66 4 6 2 3 77 80 2 3 8 3 188 191 2 −6 1 4 66 64 5 3 7 4 39 287 2 3 15 4 46 42 7 5 2 3 59 70 2 4 8 3 79 78 2 −5 1 4 100 102 2 4 7 4 58 139 2 −2 16 4 36 41 8 4 2 3 87 91 3 5 8 3 27 15 22 −4 1 4 90 77 2 5 7 4 108 36 2 −1 16 4 55 66 2 3 2 3 223 231 3 6 8 3 25 28 8 −3 1 4 141 148 1 6 7 4 69 57 5 0 16 4 24 6 6 2 2 3 377 364 3 −6 9 3 59 52 6 −2 1 4 112 111 2 −6 8 4 45 106 7 1 16 4 61 65 4 1 2 3 725 744 16 −5 9 3 82 80 4 −1 1 4 489 481 4 −5 8 4 176 36 2 2 16 4 32 41 7 0 2 3 1539 1543 19 −4 9 3 261 247 2 0 1 4 731 731 10 −4 8 4 86 36 1 1 0 5 97 112 2 1 2 3 723 744 8 −3 9 3 116 117 3 1 1 4 473 481 6 −3 8 4 207 177 6 2 0 5 323 371 45 2 2 3 359 364 4 −2 9 3 72 67 2 2 1 4 108 111 2 −2 8 4 119 93 3 3 0 5 180 174 2 4 2 3 83 91 1 −1 9 3 40 31 3 4 1 4 90 77 4 −1 8 4 231 208 6 4 0 5 115 109 2 5 2 3 63 70 1 0 9 3 52 55 2 5 1 4 102 103 5 0 8 4 180 121 10 5 0 5 316 289 4 6 2 3 86 80 3 1 9 3 32 31 1 6 1 4 74 64 4 1 8 4 236 230 7 −6 1 5 62 62 4 7 2 3 25 20 11 2 9 3 69 67 1 7 1 4 38 45 7 2 8 4 124 122 2 −5 1 5 209 197 3 6 3 3 79 84 4 3 9 3 116 117 1 −6 2 4 30 20 9 3 8 4 211 208 4 −4 1 5 138 128 2 5 3 3 127 121 2 4 9 3 256 247 4 −5 2 4 203 150 3 4 8 4 91 93 2 −3 1 5 101 112 2 4 3 3 217 214 8 5 9 3 83 80 5 −4 2 4 136 129 2 5 8 4 181 177 2 −2 1 5 261 256 2 3 3 3 87 77 2 6 9 3 66 52 9 −3 2 4 329 324 3 6 8 4 46 36 5 −1 1 5 290 294 6 2 3 3 217 219 2 −5 10 3 65 65 4 −2 2 4 236 241 2 −6 9 4 48 41 7 0 1 5 244 248 2 1 3 3 676 688 22 −4 10 3 146 144 1 −1 2 4 471 497 15 −5 9 4 51 48 3 1 1 5 287 295 3 0 3 3 461 472 10 −3 10 3 37 35 2 0 2 4 952 922 20 −4 9 4 107 104 3 2 1 5 249 257 3 1 3 3 675 687 5 −2 10 3 85 74 3 1 2 4 483 497 8 −3 9 4 74 74 1 4 1 5 135 128 2 2 3 3 228 219 3 −1 10 3 251 228 2 2 2 4 232 242 3 −2 9 4 101 98 2 5 1 5 201 197 3 4 3 3 220 213 2 0 10 3 63 41 1 4 2 4 125 129 1 −1 9 4 72 69 1 6 1 5 76 61 4 5 3 3 130 120 7 1 10 3 237 228 8 5 2 4 203 191 3 0 9 4 176 174 4 7 1 5 25 46 10 6 3 3 81 84 3 2 10 3 83 74 1 6 2 4 27 20 11 1 9 4 66 69 1 −5 2 5 118 119 2 7 3 3 54 45 5 3 10 3 34 35 2 7 2 4 38 9 7 2 9 4 102 97 4 −4 2 5 32 44 4 6 4 3 69 68 3 4 10 3 147 144 3 −6 3 4 82 78 3 3 9 4 78 73 2 −3 2 5 224 218 2 5 4 3 135 136 2 5 10 3 74 65 3 −5 3 4 44 44 7 4 9 4 104 104 2 −2 2 5 262 273 4 4 4 3 79 85 1 −5 11 3 96 91 4 −4 3 4 15 9 9 5 9 4 53 48 5 −1 2 5 713 749 40 3 4 3 109 103 2 −4 11 3 130 130 3 −3 3 4 275 287 4 6 9 4 36 41 6 0 2 5 403 403 3 2 4 3 119 121 2 −3 11 3 157 153 4 −2 3 4 262 259 7 −5 10 4 59 60 8 1 2 5 716 750 7 1 4 3 300 297 9 −2 11 3 148 137 2 −1 3 4 315 325 15 −4 10 4 74 66 3 2 2 5 262 272 3 0 4 3 261 268 3 −1 11 3 58 63 1 0 3 4 241 241 4 −3 10 4 104 104 2 3 2 5 41 44 3 5 2 5 124 119 2 −3 10 5 73 75 1 7 2 6 35 28 8 4 10 6 59 52 4 −3 4 7 71 165 1 6 2 5 66 56 4 −2 10 5 32 29 2 −4 3 6 147 143 2 5 10 6 92 97 2 −2 4 7 151 142 2 7 2 5 38 37 5 −1 10 5 109 112 2 −3 3 6 127 134 2 −5 11 6 34 22 7 −1 4 7 314 293 3 5 3 5 78 76 3 0 10 5 20 21 5 −2 3 6 361 357 3 −4 11 6 129 126 2 0 4 7 148 130 1 4 3 5 105 98 2 1 10 5 111 112 2 −1 3 6 287 275 2 −3 11 6 30 29 6 1 4 7 302 292 4 3 3 5 226 216 2 2 10 5 39 29 8 0 3 6 283 262 12 −2 11 6 113 115 1 3 4 7 174 165 2 2 3 5 206 194 4 3 10 5 70 75 1 1 3 6 273 276 2 −1 11 6 170 176 5 4 4 7 75 79 3 1 3 5 158 136 2 4 10 5 43 41 4 2 3 6 356 357 4 0 11 6 23 20 2 5 4 7 80 78 3 0 3 5 353 335 5 5 10 5 108 110 4 4 3 6 145 143 3 1 11 6 170 176 2 6 4 7 82 81 4 1 3 5 159 136 3 −5 11 5 33 27 6 5 3 6 201 198 3 2 11 6 111 116 2 −4 5 7 61 60 3 4 3 5 99 97 3 −4 11 5 90 84 2 6 3 6 61 50 5 3 11 6 31 29 16 −3 5 7 107 104 1 5 3 5 80 76 3 −3 11 5 29 27 3 −3 4 6 86 87 2 4 11 6 124 125 3 −2 5 7 162 153 4 6 3 5 60 51 5 −2 11 5 104 99 1 −2 4 6 113 101 1 5 11 6 23 22 7 −1 5 7 152 140 2 7 3 5 32 6 8 −1 11 5 97 106 2 −1 4 6 539 523 13 −4 12 6 38 33 6 0 5 7 161 186 28 4 4 5 20 21 19 0 11 5 28 2 8 0 4 6 65 59 1 −3 12 6 129 128 4 1 5 7 145 139 1 3 4 5 203 196 3 1 11 5 102 106 2 1 4 6 530 523 6 −2 12 6 100 93 3 2 5 7 152 153 2 2 4 5 248 242 5 2 11 5 100 100 1 2 4 6 102 101 2 −1 12 6 91 89 3 3 5 7 106 104 2 1 4 5 73 71 2 3 11 5 39 27 6 3 4 6 87 87 2 0 12 6 111 112 1 4 5 7 63 60 1 0 4 5 158 171 5 4 11 5 83 84 3 4 4 6 103 99 3 1 12 6 90 89 2 5 5 7 174 176 3 1 4 5 72 71 1 5 11 5 35 27 7 5 4 6 32 54 4 2 12 6 94 94 2 6 5 7 54 66 5 3 4 5 180 196 3 −4 12 5 52 55 4 6 4 6 72 60 4 3 12 6 131 128 3 −4 6 7 105 107 2 4 4 5 8 20 7 −3 12 5 53 44 4 −4 5 6 62 62 2 4 12 6 30 32 7 −3 6 7 135 133 1 5 4 5 58 63 2 −2 12 5 86 81 1 −3 5 6 27 8 3 −4 13 6 28 16 12 −2 6 7 171 160 1 6 4 5 126 122 3 −1 12 5 39 41 2 −2 5 6 166 164 2 −3 13 6 114 124 5 −1 6 7 201 200 2 5 5 5 46 42 5 0 12 5 31 3 7 −1 5 6 301 282 3 −2 13 6 104 105 2 0 6 7 198 195 3 4 5 5 26 23 3 1 12 5 43 41 2 0 5 6 109 98 1 −1 13 6 117 121 4 1 6 7 194 200 3 3 5 5 50 47 1 2 12 5 82 81 1 1 5 6 291 282 4 0 13 6 26 25 4 2 6 7 177 150 2 2 5 5 428 416 4 3 12 5 50 44 3 3 5 6 10 8 9 1 13 6 117 121 2 3 6 7 134 134 1 1 5 5 126 136 2 4 12 5 56 54 3 4 5 6 68 62 1 2 13 6 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13 18 19 3 −3 1 14 35 33 4 4 4 11 65 66 2 0 13 11 50 40 6 0 8 12 88 60 2 1 4 13 77 72 2 −2 1 14 23 4 4 3 4 11 189 186 3 1 13 11 34 20 8 1 8 12 90 89 1 2 4 13 59 58 2 −1 1 14 50 60 2 2 4 11 26 24 3 2 13 11 40 55 12 2 8 12 85 84 2 3 4 13 54 49 2 0 1 14 85 81 1 1 4 11 101 100 1 3 13 11 55 56 7 3 8 12 72 67 4 4 4 13 72 80 3 1 1 14 57 61 1 0 4 11 79 83 1 −2 14 11 25 13 7 4 8 12 66 72 5 5 4 13 24 32 11 2 1 14 22 7 3 1 4 11 101 100 1 −1 14 11 26 28 10 5 8 12 13 36 12 −4 5 13 37 38 4 3 1 14 38 33 5 2 4 11 26 24 5 0 14 11 36 41 4 −4 9 12 84 92 2 −3 5 13 80 79 2 4 1 14 38 44 4 3 4 11 185 286 3 1 14 11 18 28 17 −3 9 12 113 114 2 −2 5 13 81 79 1 5 1 14 4 28 4 4 4 11 63 66 3 2 14 11 27 14 7 −2 9 12 21 25 4 −1 5 13 26 26 2 −5 2 14 76 84 4 5 4 11 47 52 5 0 0 12 640 627 11 −1 9 12 112 107 2 0 5 13 266 274 2 −4 2 14 75 78 2 4 5 11 17 12 8 1 0 12 27 27 2 0 9 12 58 52 1 1 5 13 32 26 4 −3 2 14 215 215 7 3 5 11 106 101 4 2 0 12 153 135 1 1 9 12 109 107 2 2 5 13 84 79 2 −2 2 14 79 79 2 2 5 11 98 100 1 3 0 12 93 99 3 2 9 12 20 25 6 3 5 13 78 79 3 −1 2 14 152 146 1 1 5 11 136 133 2 4 0 12 110 113 2 3 9 12 107 114 3 4 5 13 39 38 6 0 2 14 19 1 4 0 5 11 78 75 1 −4 1 12 191 207 3 4 9 12 84 92 4 5 5 13 53 60 5 1 2 14 151 146 3 1 5 11 134 133 2 −3 1 12 150 158 3 −4 10 12 26 25 7 −4 6 13 81 88 8 2 2 14 84 79 2 2 5 11 94 101 2 −2 1 12 42 37 2 −3 10 12 33 13 13 −3 6 13 44 36 5 3 2 14 222 215 1 3 5 11 105 101 2 −1 1 12 132 137 2 −2 10 12 71 68 2 −2 6 13 111 110 1 4 2 14 73 78 2 4 5 11 30 12 6 0 1 12 130 121 1 −1 10 12 72 71 1 −1 6 13 143 140 1 5 2 14 54 84 5 5 5 11 46 42 6 1 1 12 131 137 1 0 10 12 161 162 2 0 6 13 23 11 3 −5 3 14 52 44 6 4 6 11 74 73 2 2 1 12 38 37 3 1 10 12 70 71 2 1 6 13 142 140 2 −4 3 14 33 39 5 3 6 11 63 60 3 3 1 12 145 157 4 2 10 12 71 69 2 2 6 13 112 110 1 −3 3 14 49 48 2 2 6 11 34 33 3 4 1 12 197 207 3 3 10 12 15 13 15 3 6 13 47 36 5 −2 3 14 57 50 3 1 6 11 141 145 1 −4 2 12 60 60 2 4 10 12 24 25 14 4 6 13 76 88 3 −1 3 14 83 81 1 0 6 11 47 30 3 −3 2 12 60 61 2 −3 11 12 32 17 9 5 6 13 24 44 11 0 3 14 63 65 1 1 6 11 142 145 2 −2 2 12 115 112 1 −2 11 12 46 48 5 −4 7 13 55 64 3 1 3 14 84 82 3 2 6 11 32 33 2 −1 2 12 192 198 2 −1 11 12 56 51 3 −3 7 13 100 95 2 2 3 14 54 50 1 3 6 11 60 60 3 0 2 12 104 106 1 0 11 12 35 26 4 −2 7 13 110 107 2 3 3 14 53 48 3 4 6 11 66 72 4 1 2 12 195 198 2 1 11 12 48 51 3 −1 7 13 80 80 2 4 3 14 31 39 8 5 3 14 26 44 11 2 1 15 160 151 2 1 11 15 25 20 6 −2 10 16 73 78 4 1 0 18 129 120 2 5 4 14 46 22 6 3 1 15 136 131 1 2 11 15 6 38 5 −1 10 16 25 23 6 2 0 18 197 195 2 4 4 14 23 12 8 4 1 15 49 57 5 −1 12 15 35 41 6 0 10 16 25 13 7 3 0 18 23 20 11 3 4 14 54 43 5 5 1 15 35 56 11 0 12 15 42 42 4 1 10 16 21 23 9 −4 1 18 48 50 4 2 4 14 34 19 3 −4 2 15 47 46 4 1 12 15 42 41 5 2 10 16 72 78 5 −3 1 18 44 41 4 1 4 14 49 46 1 −3 2 15 38 35 3 0 0 16 27 8 3 −1 11 16 38 13 12 −2 1 18 88 80 2 0 4 14 54 52 2 −2 2 15 42 37 3 1 0 16 70 62 1 0 11 16 30 13 5 −1 1 18 52 49 2 1 4 14 53 46 2 −1 2 15 170 165 1 2 0 16 31 18 3 1 11 16 17 14 17 0 1 18 26 23 4 2 4 14 28 19 6 0 2 15 166 157 2 3 0 16 91 95 1 0 12 16 29 18 7 1 1 18 56 49 2 3 4 14 45 43 3 1 2 15 172 165 3 4 0 16 13 12 12 1 0 17 19 2 5 2 1 18 83 80 3 5 4 14 31 21 7 2 2 15 41 37 4 −4 1 16 60 73 3 2 0 17 82 71 3 3 1 18 40 41 6 4 5 14 33 43 5 3 2 15 33 36 3 −3 1 16 64 62 2 3 0 17 78 73 2 4 1 18 33 50 6 3 5 14 59 49 3 4 2 15 38 46 5 −2 1 16 133 123 1 4 0 17 15 27 15 −4 2 18 34 39 14 2 5 14 29 23 3 5 2 15 45 37 9 −1 1 16 105 101 1 −4 1 17 30 32 5 −3 2 18 17 3 14 1 5 14 52 50 1 −5 3 15 60 57 5 0 1 16 32 20 3 −3 1 17 28 32 6 −2 2 18 135 126 1 0 5 14 27 30 3 −4 3 15 39 45 3 1 1 16 109 101 3 −2 1 17 150 139 1 −1 2 18 54 47 2 1 5 14 57 50 4 −3 3 15 47 36 3 2 1 16 131 123 1 −1 1 17 114 111 1 0 2 18 23 20 6 2 5 14 37 23 11 −2 3 15 145 131 2 3 1 16 60 62 4 0 1 17 26 1 7 1 2 18 52 47 2 3 5 14 56 50 2 −1 3 15 75 75 1 4 1 16 71 73 3 1 1 17 118 111 1 2 2 18 137 126 3 4 5 14 40 42 6 0 3 15 180 165 1 −4 2 16 55 59 4 2 1 17 147 139 2 3 2 18 19 3 19 4 6 14 58 57 3 1 3 15 78 74 1 −3 2 16 64 58 3 3 1 17 28 32 5 4 2 18 20 39 20 3 6 14 97 96 2 2 3 15 133 131 1 −2 2 16 69 61 1 4 1 17 37 32 7 −4 3 18 43 29 7 2 6 14 104 102 1 3 3 15 33 36 3 −1 2 16 152 147 1 −4 2 17 35 33 4 −3 3 18 25 5 6 1 6 14 42 41 2 4 3 15 40 46 6 0 2 16 36 22 2 −3 2 17 42 22 4 −2 3 18 63 57 2 0 6 14 21 8 4 5 3 15 43 57 6 1 2 16 153 147 3 −2 2 17 47 76 2 −1 3 18 29 23 4 1 6 14 42 41 2 −5 4 15 32 8 10 2 2 16 66 61 1 −1 2 17 63 60 1 0 3 18 54 53 4 2 6 14 106 102 1 −4 4 15 41 33 8 3 2 16 57 58 4 0 2 17 28 16 5 2 3 18 49 57 3 3 6 14 86 96 3 −3 4 15 80 81 4 4 2 16 45 59 4 1 2 17 60 60 3 3 3 18 16 4 15 4 6 14 54 36 5 −2 4 15 93 94 3 −4 3 16 40 46 9 2 2 17 67 79 3 4 3 18 27 29 18 4 7 14 73 82 9 −1 4 15 24 16 3 −3 3 16 64 59 2 3 2 17 23 22 7 −3 4 18 14 4 14 3 7 14 32 34 7 0 4 15 90 92 1 −2 3 16 25 16 3 4 2 17 20 23 19 −2 4 18 52 45 3 2 7 14 61 65 1 1 4 15 38 16 4 −1 3 16 137 133 1 −4 3 17 30 11 6 −1 4 18 35 33 3 1 7 14 176 179 1 2 4 15 96 94 5 0 3 16 36 20 2 −3 3 17 70 67 4 0 4 18 48 47 2 0 7 14 25 5 3 3 4 15 84 82 2 1 3 16 137 133 3 −2 3 17 57 45 2 1 4 18 42 32 4 1 7 14 181 179 2 4 4 15 25 33 12 2 3 16 24 17 12 −1 3 17 55 55 1 2 4 18 58 45 3 2 7 14 63 65 2 −4 5 15 45 33 4 3 3 16 59 59 3 0 3 17 40 28 3 4 4 18 31 44 10 3 7 14 29 34 10 −3 5 15 60 64 2 4 3 16 40 46 7 1 3 17 58 55 3 −3 5 18 43 35 3 4 7 14 73 81 4 −2 5 15 123 127 1 −4 4 16 41 38 10 2 3 17 54 46 4 −2 5 18 52 43 5 4 8 14 31 26 7 −1 5 15 46 48 1 −3 4 16 58 55 2 3 3 17 60 66 2 −1 5 18 53 48 3 3 8 14 50 65 3 0 5 15 116 109 2 −2 4 16 104 97 1 −4 4 17 39 38 5 0 5 18 52 48 2 2 8 14 72 69 2 1 5 15 50 48 2 −1 4 16 80 75 1 −3 4 17 46 43 3 1 5 18 53 49 5 1 8 14 71 68 1 2 5 15 124 127 2 0 4 16 47 42 2 −2 4 17 60 57 3 2 5 18 46 43 3 0 8 14 102 107 1 3 5 15 59 64 3 1 4 16 81 75 2 −1 4 17 88 90 1 3 5 18 36 35 8 1 8 14 70 68 3 4 5 15 4 33 4 2 4 16 105 97 3 0 4 17 12 5 11 −3 6 18 33 32 7 2 8 14 71 69 2 −4 6 15 43 36 7 3 4 16 54 54 4 1 4 17 89 90 2 −2 6 18 65 66 3 3 8 14 59 64 5 −3 6 15 38 39 7 4 4 16 27 38 9 2 4 17 55 57 2 −1 6 18 41 37 4 4 8 14 4 26 4 −2 6 15 76 73 1 −4 5 16 41 38 4 3 4 17 44 43 7 0 6 18 8 3 8 4 9 14 26 27 25 −1 6 15 112 121 1 −3 5 16 26 9 7 4 4 17 24 38 13 1 6 18 27 37 8 3 9 14 37 11 5 0 6 15 58 57 2 −2 5 16 78 79 1 −4 5 17 52 49 3 2 6 18 62 66 2 2 9 14 62 66 3 1 6 15 116 121 2 −1 5 16 41 41 2 −3 5 17 43 36 4 −3 7 18 25 17 10 1 9 14 60 59 2 2 6 15 70 73 2 0 5 16 84 88 1 −2 5 17 42 39 4 −2 7 18 45 38 3 0 9 14 34 28 3 3 6 15 33 39 8 1 5 16 44 40 2 −1 5 17 113 109 1 −1 7 18 30 17 5 1 9 14 57 59 2 4 6 15 17 36 16 2 5 16 78 79 2 0 5 17 70 68 3 0 7 18 42 45 15 2 9 14 69 66 2 −4 7 15 43 39 5 3 5 16 25 9 8 1 5 17 113 109 2 1 7 18 31 17 19 4 9 14 16 27 16 −3 7 15 33 31 12 4 5 16 26 38 10 2 5 17 36 39 4 2 7 18 36 38 3 3 10 14 39 37 4 −2 7 15 83 78 2 −4 6 16 45 23 10 3 5 17 31 36 4 −2 8 18 52 51 3 2 10 14 37 37 4 −1 7 15 38 29 5 −3 6 16 63 66 2 4 5 17 38 49 6 −1 8 18 61 61 3 1 10 14 46 43 2 0 7 15 54 45 3 −2 6 16 17 14 17 −3 6 17 45 7 5 0 8 18 55 63 3 0 10 14 72 75 2 1 7 15 44 29 8 −1 6 16 64 64 1 −2 6 17 26 17 6 1 8 18 55 61 9 1 10 14 45 41 5 2 7 15 79 78 2 0 6 16 77 80 1 −1 6 17 56 54 2 2 8 18 47 51 3 2 10 14 33 37 4 3 7 15 6 31 5 1 6 16 69 54 2 0 6 17 65 56 3 −1 9 18 39 41 5 3 10 14 43 37 6 4 7 15 36 39 7 2 6 16 21 14 7 1 6 17 60 53 3 0 9 18 16 12 13 3 11 14 27 19 2 −4 8 15 35 32 6 3 6 16 68 66 5 2 6 17 23 17 22 1 9 18 42 41 6 2 11 14 54 48 3 −3 8 15 48 53 6 4 6 16 9 23 9 3 6 17 18 7 18 1 0 19 15 6 15 1 11 14 51 53 3 −2 8 15 28 37 5 −4 7 16 28 3 7 −3 7 17 57 58 3 2 0 19 29 24 9 0 11 14 78 75 2 −1 8 15 47 42 4 −3 7 16 50 41 3 −2 7 17 96 98 2 3 0 19 37 25 20 1 11 14 53 53 4 0 8 15 120 122 2 −2 7 16 74 76 2 −1 7 17 58 62 4 −3 1 19 63 66 2 2 11 14 50 48 4 1 8 15 49 42 2 −1 7 16 96 97 2 0 7 17 97 96 5 −2 1 19 48 54 3 2 12 14 32 30 4 2 8 15 40 37 20 0 7 16 67 69 3 1 7 17 58 61 3 −1 1 19 53 52 4 1 12 14 69 71 2 3 8 15 58 53 5 1 7 16 98 97 2 2 7 17 92 98 3 0 1 19 17 8 12 0 12 14 22 4 8 −3 9 15 73 79 2 2 7 16 73 76 5 3 7 17 64 58 4 1 1 19 54 52 3 1 12 14 70 71 4 −2 9 15 37 39 5 3 7 16 25 41 13 −3 8 17 50 51 3 2 1 19 52 54 5 2 12 14 34 30 10 −1 9 15 55 53 6 4 7 16 4 3 4 −2 8 17 78 82 2 3 1 19 59 66 2 1 13 14 33 39 5 0 9 15 36 27 4 −3 8 16 62 61 2 −1 8 17 31 32 8 −3 2 19 36 50 4 0 13 14 28 28 8 1 9 15 59 53 3 −2 8 16 33 24 4 0 8 17 31 22 11 −2 2 19 48 34 3 1 13 14 15 39 14 2 9 15 41 39 7 −1 8 16 75 73 6 1 8 17 18 32 18 −1 2 19 34 29 4 1 0 15 309 302 3 3 9 15 63 79 9 0 8 16 48 51 4 2 8 17 83 82 6 0 2 19 29 12 7 2 0 15 63 62 1 −3 10 15 45 45 4 1 8 16 72 73 2 3 8 17 41 51 6 1 2 19 19 29 10 3 0 15 21 13 19 −2 10 15 21 22 7 2 8 16 28 24 5 −2 9 17 49 54 3 2 2 19 34 34 6 4 0 15 37 38 5 −1 10 15 59 48 3 3 8 16 62 62 4 −1 9 17 44 37 4 3 2 19 42 50 8 5 1 15 48 57 5 0 10 15 17 15 12 −3 9 16 23 28 8 0 9 17 35 1 9 −3 3 15 29 14 6 4 1 15 52 57 3 1 10 15 46 48 3 −2 9 16 43 47 3 1 9 17 36 37 4 −2 3 19 35 24 4 3 1 15 138 130 3 2 10 15 24 22 7 −1 9 16 48 39 3 2 9 17 35 54 2 −1 3 19 45 39 3 2 1 15 161 151 2 3 10 15 32 44 6 0 9 16 30 42 5 −1 10 17 27 31 4 0 3 19 35 33 7 1 1 15 102 95 1 −2 11 15 39 38 3 1 9 16 42 39 3 0 10 17 22 2 10 1 3 19 30 39 5 0 1 15 93 90 1 −1 11 15 33 20 4 2 9 16 40 47 3 1 10 17 18 21 12 2 3 19 41 24 4 1 1 15 101 95 2 0 11 15 22 21 8 3 9 16 26 28 12 0 0 18 27 7 6 −3 4 19 24 19 10 2 4 19 33 54 2 2 7 19 13 15 12 0 2 20 34 10 13 2 5 20 21 25 6 2 2 21 36 32 18 1 4 19 33 31 3 −1 8 19 57 58 3 1 2 20 37 41 7 −2 6 20 30 18 8 −2 3 21 39 37 6 0 4 19 50 51 4 0 8 19 43 41 6 2 2 20 71 71 3 −1 6 20 28 26 5 −1 3 21 37 17 6 1 4 19 20 31 10 1 8 19 54 58 13 3 2 20 46 47 6 0 6 20 20 5 11 1 3 21 25 17 7 2 4 19 46 54 5 0 0 20 41 45 5 −3 3 20 58 58 3 1 6 20 33 26 6 2 3 21 33 37 11 2 5 19 38 27 7 1 0 20 131 131 3 −2 3 20 39 37 4 0 7 20 21 2 15 −1 4 21 14 19 14 1 5 19 20 10 9 2 0 20 46 36 4 −1 3 20 31 33 4 1 7 20 13 7 12 0 4 21 41 29 5 0 5 19 19 18 11 3 0 20 30 9 7 0 3 20 29 20 9 1 0 21 45 43 4 0 5 21 29 15 14 2 5 19 33 28 10 −3 1 20 38 11 8 1 3 20 42 33 4 2 0 21 33 28 7 1 5 21 10 14 9 2 6 19 29 28 6 −2 1 20 63 65 4 2 3 20 36 37 3 −2 1 21 61 69 6 0 0 22 24 49 4 1 6 19 19 29 18 −1 1 20 34 37 5 −2 4 20 40 36 3 −1 1 21 50 51 6 1 0 22 44 35 5 0 6 19 29 20 6 0 1 20 38 63 3 −1 4 20 53 47 4 0 1 21 21 19 6 −1 1 22 39 31 6 1 6 19 31 12 5 1 1 20 32 37 6 0 4 20 31 30 4 1 1 21 61 51 3 0 1 22 27 13 6 2 6 19 22 20 8 2 1 20 65 65 6 1 4 20 57 47 9 2 1 21 55 69 4 1 1 22 21 31 20 2 7 19 34 15 10 3 1 20 34 13 9 2 4 20 26 34 5 −2 2 21 27 32 7 0 2 22 35 37 6 1 7 19 16 23 15 −3 2 20 46 47 10 −2 5 20 30 25 8 −1 2 21 44 47 3 0 7 19 27 20 15 −2 2 20 72 71 2 −1 5 20 27 20 6 0 2 21 28 24 5 1 7 19 32 23 5 −1 2 20 40 41 3 0 5 20 18 18 17 1 2 21 45 47 5

Synthesis of 2MBP EXAMPLE 3

The preparation of 2MBP having the basic structure I can be accomplished by a common general method, i.e. the condensation of a bicyclic Windaus-Grundmann type ketone II with the allylic phosphine oxide III to the corresponding 2-methylene-19-nor-vitamin D analog IV followed by deprotection at C-1 and C-3 in the latter compound IV to obtain compound I, i.e. 2MBP.

In the structures II, III, and IV groups Y₁ and Y₂ are hydroxy-protecting groups, it being also understood that any functionalities that might be sensitive, or that interfere with the condensation reaction, be suitably protected as is well-known in the art. The process shown above represents an application of the convergent synthesis concept, which has been applied effectively for the preparation of vitamin D compounds [e.g. Lythgoe et al., J. Chem. Soc. Perkin Trans. I, 590 (1978); Lythgoe, Chem. Soc. Rev. 9, 449 (1983); Toh et al., J. Org. Chem. 48, 1414 (1983); Baggiolini et al., J. Org. Chem. 51, 3098 (1986); Sardina et al., J. Org. Chem. 51, 1264 (1986); J. Org. Chem. 51, 1269 (1986); DeLuca et al., U.S. Pat. No. 5,086,191; DeLuca et al., U.S. Pat. No. 5,536,713].

Hydrindanones of the general structure II art known, or can be prepared by known methods.

For the preparation of the required phosphine oxides of general structure III, a synthetic route has been developed starting from a methyl quinicate derivative which is easily obtained from commercial (1R,3R,4S,5R)-(−)-quinic acid as described by Perlman et al., Tetrahedron Lett. 32, 7663 (1991) and DeLuca et al., U.S. Pat. No. 5,086,191.

The overall process of the synthesis of compound I is illustrated and described more completely in U.S. Pat. No. 5,843,928 entitled “2-Alkylidene-19-Nor-Vitamin D Compounds” and in application Ser. No. 09/878,438 filed Jun. 11, 2001 entitled “1α-Hydroxy-2-Methylene-19-Nor-Homopregnacalciferol and its Uses” the specifications of which are specifically incorporated herein by reference.

As used in the description and in the claims, the term “hydroxy-protecting group” signifies any group commonly used for the temporary protection of hydroxy functions, such as for example, alkoxycarbonyl, acyl, alkylsilyl or alkylarylsilyl groups (hereinafter referred to simply as “silyl” groups), and alkoxyalkyl groups. Alkoxycarbonyl protecting groups are alkyl-O—CO— groupings such as methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, isopropoxycarbonyl, butoxycarbonyl, isobutoxycarbonyl, tert-butoxycarbonyl, benzyloxycarbonyl or allyloxycarbonyl. The term “acyl” signifies an alkanoyl group of 1 to 6 carbons, in all of its isomeric forms, or a carboxyalkanoyl group of 1 to 6 carbons, such as an oxalyl, malonyl, succinyl, glutaryl group, or an aromatic acyl group such as benzoyl, or a halo, nitro or alkyl substituted benzoyl group. The word “alkyl” as used in the description of the claims, denotes a straight-chain or branched alkyl radical of 1 to 10 carbons, in all its isomeric forms. Alkoxyalkyl protecting groups are groupings such as methoxymethyl, ethoxymethyl, methoxyethoxymethyl, or tetrahydrofuranyl and tetrahydropyranyl. Preferred silyl-protecting groups are trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, dibutylmethylsilyl, diphenylmethylsilyl, phenyldimethylsilyl, diphenyl-t-butylsilyl and analogous alkylated silyl radicals. The term “aryl” specifies a phenyl-, or an alkyl-, nitro or halo-substituted phenyl group.

A “protected hydroxy” group is a hydroxy group derivatised or protected by any of the above groups commonly used for the temporary or permanent protection of hydroxy functions, e.g. the silyl, alkoxyalkyl, acyl or alkoxycarbonyl groups, as previously defined. The terms “hydroxyalkyl”, “deuteroalkyl”, “aminoalkyl”, “halogenalkyl”, “alkoxyalkyl”, “aryloxyalkyl”, and “fluoroalkyl” refer to an alkyl radical substituted by one or more hydroxy, deuterium, amino, halogen, alkoxy, aryloxy, or fluoro group respectively. A “halogen” group includes any of the five elements fluorine, chlorine, bromine, iodine and astatine that form a part of group VIIA of the periodic table.

Referring now to Schemes I-III, there are illustrated three different methods of synthesizing 2MBP starting with vitamin D₂. The first five steps are identical (shown in Scheme I) for each synthesis to obtain the protected 20(S)-aldehyde. Thereafter, in Schemes I and II the aldehyde is converted to a protected 20(S)-alcohol which in turn has its side chain converted to bis-homo in two different ways (Scheme I versus Scheme II). In contrast, Scheme III illustrates a direct conversion of the protected 20(S)aldehyde to the bis-homo side chain. 

We claim:
 1. (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol in crystalline form.
 2. The crystalline form of (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol having molecular packing arrangement defined by orthorhombic space group P2(1)2(1)2(1) and unit cell dimensions a=6.6A⁰, b=15.5A⁰, c=20.1A⁰, α=90⁰, β=90⁰ and γ=90⁰.
 3. A three dimensional structure for (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol as defined by the molecular packing arrangement set forth in claim
 2. 4. A method of purifying (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol, comprising the steps of: (a) boiling a solvent selected from the group consisting of acetone, ethyl acetate, isopropanol, chloroform, dichloromethane and diethyl ether under inert atmosphere; (b) dissolving a product containing (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol to be purified in said solvent; (c) cooling said solvent and dissolved product below ambient temperature for a sufficient amount of time to form a precipitate of (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol crystals, and (d) separating the (20S)-1α-hydroxy-2-methylene-19-nor-bishomopregnacalciferol crystals from the solvent.
 5. The method of claim 4 including the further step of allowing said solvent and dissolved product to cool to ambient temperature prior to cooling below ambient temperature.
 6. The method of claim 4 wherein said inert atmosphere is an argon atmosphere.
 7. The method of claim 4 wherein said solvent and dissolved product is cooled to between about 35° F. to about 45° F.
 8. The method of claim 4 wherein the step of separating comprises filtering the solvent and precipitate to obtain the crystals.
 9. The method of claim 4 including a further step (e) comprising repeating steps (a) through (d) using the recovered crystals from step (d) as the product of step (b). 